cosmological time 中文意思是什麼
cosmological time
解釋
宇宙時- cosmological : adj. 宇宙論的。
- time : n 1 時，時間，時日，歲月。2 時候，時刻；期間；時節，季節；〈常pl 〉時期，年代，時代； 〈the time ...
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There is a cosmological arrow of time.
還有一個宇宙學的時間指針。 -
When the field is slowly - varying, the scalar field potential acts like a cosmological constant. in addition to the quintessence models, many other theories for dark energy have been proposed, including models based on super - symmetric gauge theories, super - gravity, small extra dimensions, large extra dimensions, quantum field theory effects in curved space - time. all these models are essentially based on the existence of a mass less scalar field acting at a cosmic scale
除了真空場模型外，科學家亦提出其他解釋黑暗能量的理論，這些模型建基於不同的物理理論或假設，例如超對稱規范理論超重力增加一些小或大的空間維數量子力學在彎曲時空的影響等等，這些理論模型，返本溯源，其實背後都假設存在著一個特性類似於宇宙常數的無質量純量場。 -
How the universe evolves is affected by three factors, namely the mean density of mass - energy, the space - time curvature and a mysterious factor, the cosmological constant
宇宙尺度的變化受三個因素影響：宇宙中質量-能量的平均密度宇宙的時空曲率與及一個神秘因素宇宙常數。 -
The future of the universe is mainly determined by the mean density of mass - energy and the space - time curvature, while cosmological constant does not carry any weight among popular cosmological theories
現在流行的宇宙論都不考慮宇宙常數，宇宙的未來完全由質量能量的平均密度及宇宙的時空曲率來決定。 -
The gravitational effect of matter caused acceleration and an unstable universe, which einstein did not want, since at the time the universe was not known to be expanding. thus einstein introduced a cosmological constant into his equations for general relativity. this term acts to counteract the gravitational pull of matter, and so it has been described as an anti - gravity effect
當時科學家並不知道宇宙正在膨脹，所以愛恩斯坦對這樣的宇宙模型並不滿意，故特意在廣義相對論引力方程中加入一個人工的宇宙常數，這個常數的作用，相等於一個和引力相反的排斥力，以抵銷引力的作用。
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